2 * $Id: fork.c,v 1.67 2009-10-22 12:35:38 franklahm Exp $
4 * Copyright (c) 1990,1993 Regents of The University of Michigan.
5 * All Rights Reserved. See COPYRIGHT.
10 #endif /* HAVE_CONFIG_H */
18 #include <atalk/adouble.h>
19 #include <atalk/logger.h>
21 #include <sys/param.h>
22 #include <sys/socket.h>
24 #include <netatalk/at.h>
26 #include <atalk/dsi.h>
27 #include <atalk/atp.h>
28 #include <atalk/asp.h>
29 #include <atalk/afp.h>
31 #include <atalk/util.h>
32 #include <atalk/cnid.h>
37 #include "directory.h"
42 #define Debug(a) ((a)->options.flags & OPTION_DEBUG)
48 struct ofork *writtenfork;
51 static int getforkparams(struct ofork *ofork, u_int16_t bitmap, char *buf, size_t *buflen)
61 /* can only get the length of the opened fork */
62 if ( ( (bitmap & ((1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN)))
63 && (ofork->of_flags & AFPFORK_RSRC))
65 ( (bitmap & ((1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN)))
66 && (ofork->of_flags & AFPFORK_DATA))) {
67 return( AFPERR_BITMAP );
70 if ( ad_reso_fileno( ofork->of_ad ) == -1 ) { /* META ? */
79 if (NULL == (path.u_name = mtoupath(vol, of_name(ofork), dir->d_did, utf8_encoding()))) {
80 return( AFPERR_MISC );
82 path.m_name = of_name(ofork);
84 if ( bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) |
85 (1<<FILPBIT_FNUM) | (1 << FILPBIT_CDATE) |
86 (1 << FILPBIT_MDATE) | (1 << FILPBIT_BDATE))) {
87 if ( ad_data_fileno( ofork->of_ad ) == -1 ) {
88 if (movecwd(vol, dir) < 0)
89 return( AFPERR_NOOBJ );
90 if ( stat( path.u_name, st ) < 0 )
91 return( AFPERR_NOOBJ );
93 if ( fstat( ad_data_fileno( ofork->of_ad ), st ) < 0 ) {
94 return( AFPERR_BITMAP );
98 return getmetadata(vol, bitmap, &path, dir, buf, buflen, adp );
101 /* ---------------------------- */
102 static off_t get_off_t(char **ibuf, int is64)
108 memcpy(&temp, *ibuf, sizeof( temp ));
109 ret = ntohl(temp); /* ntohl is unsigned */
110 *ibuf += sizeof(temp);
113 memcpy(&temp, *ibuf, sizeof( temp ));
114 *ibuf += sizeof(temp);
115 ret = ntohl(temp)| (ret << 32);
118 ret = (int)ret; /* sign extend */
123 /* ---------------------- */
124 static int set_off_t(off_t offset, char *rbuf, int is64)
131 temp = htonl(offset >> 32);
132 memcpy(rbuf, &temp, sizeof( temp ));
133 rbuf += sizeof(temp);
134 ret = sizeof( temp );
135 offset &= 0xffffffff;
137 temp = htonl(offset);
138 memcpy(rbuf, &temp, sizeof( temp ));
139 ret += sizeof( temp );
144 /* ------------------------
146 static int is_neg(int is64, off_t val)
148 if (val < 0 || (sizeof(off_t) == 8 && !is64 && (val & 0x80000000U)))
153 static int sum_neg(int is64, off_t offset, off_t reqcount)
155 if (is_neg(is64, offset +reqcount) )
160 /* -------------------------
162 static int setforkmode(struct adouble *adp, int eid, int ofrefnum, int what)
164 return ad_lock(adp, eid, ADLOCK_RD | ADLOCK_FILELOCK, what, 1, ofrefnum);
167 /* -------------------------
169 int getforkmode(struct adouble *adp, int eid, int what)
171 return ad_testlock(adp, eid, what);
174 /* -------------------------
176 static int fork_setmode(struct adouble *adp, int eid, int access, int ofrefnum)
184 if (! (access & (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD))) {
185 return setforkmode(adp, eid, ofrefnum, AD_FILELOCK_OPEN_NONE);
188 if ((access & (OPENACC_RD | OPENACC_DRD))) {
189 if ((readset = getforkmode(adp, eid, AD_FILELOCK_OPEN_RD)) <0)
191 if ((denyreadset = getforkmode(adp, eid, AD_FILELOCK_DENY_RD)) <0)
194 if ((access & OPENACC_RD) && denyreadset) {
198 if ((access & OPENACC_DRD) && readset) {
202 /* boolean logic is not enough, because getforkmode is not always telling the
205 if ((access & OPENACC_RD)) {
206 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_OPEN_RD);
210 if ((access & OPENACC_DRD)) {
211 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_DENY_RD);
216 /* ------------same for writing -------------- */
217 if ((access & (OPENACC_WR | OPENACC_DWR))) {
218 if ((writeset = getforkmode(adp, eid, AD_FILELOCK_OPEN_WR)) <0)
220 if ((denywriteset = getforkmode(adp, eid, AD_FILELOCK_DENY_WR)) <0)
223 if ((access & OPENACC_WR) && denywriteset) {
227 if ((access & OPENACC_DWR) && writeset) {
231 if ((access & OPENACC_WR)) {
232 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_OPEN_WR);
236 if ((access & OPENACC_DWR)) {
237 ret = setforkmode(adp, eid, ofrefnum, AD_FILELOCK_DENY_WR);
242 if ( access == (OPENACC_WR | OPENACC_RD | OPENACC_DWR | OPENACC_DRD)) {
243 return ad_excl_lock(adp, eid);
248 /* ----------------------- */
249 int afp_openfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
253 struct ofork *ofork, *opened;
254 struct adouble *adsame = NULL;
256 int ret, adflags, eid;
258 u_int16_t vid, bitmap, access, ofrefnum;
259 char fork, *path, *upath;
266 memcpy(&vid, ibuf, sizeof( vid ));
270 if (NULL == ( vol = getvolbyvid( vid ))) {
271 return( AFPERR_PARAM );
274 memcpy(&did, ibuf, sizeof( did ));
275 ibuf += sizeof( int );
277 if (NULL == ( dir = dirlookup( vol, did ))) {
281 memcpy(&bitmap, ibuf, sizeof( bitmap ));
282 bitmap = ntohs( bitmap );
283 ibuf += sizeof( bitmap );
284 memcpy(&access, ibuf, sizeof( access ));
285 access = ntohs( access );
286 ibuf += sizeof( access );
288 if ((vol->v_flags & AFPVOL_RO) && (access & OPENACC_WR)) {
292 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
293 return get_afp_errno(AFPERR_PARAM);
296 if (*s_path->m_name == '\0') {
298 return AFPERR_BADTYPE;
301 /* stat() data fork st is set because it's not a dir */
302 switch ( s_path->st_errno ) {
308 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
310 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
313 /* FIXME should we check it first ? */
314 upath = s_path->u_name;
315 if (!vol_unix_priv(vol)) {
316 if (check_access(upath, access ) < 0) {
317 return AFPERR_ACCESS;
321 if (file_access(s_path, access ) < 0) {
322 return AFPERR_ACCESS;
327 /* XXX: this probably isn't the best way to do this. the already
328 open bits should really be set if the fork is opened by any
329 program, not just this one. however, that's problematic to do
330 if we can't write lock files somewhere. opened is also passed to
331 ad_open so that we can keep file locks together.
332 FIXME: add the fork we are opening?
334 if ((opened = of_findname(s_path))) {
335 adsame = opened->of_ad;
338 if ( fork == OPENFORK_DATA ) {
340 adflags = ADFLAGS_DF|ADFLAGS_HF;
343 adflags = ADFLAGS_HF;
346 path = s_path->m_name;
347 if (( ofork = of_alloc(vol, curdir, path, &ofrefnum, eid,
348 adsame, st)) == NULL ) {
349 return( AFPERR_NFILE );
353 if (access & OPENACC_WR) {
354 /* try opening in read-write mode */
355 if (ad_open(upath, adflags, O_RDWR, 0, ofork->of_ad) < 0) {
363 if (fork == OPENFORK_DATA) {
364 /* try to open only the data fork */
365 if (ad_open(upath, ADFLAGS_DF, O_RDWR, 0, ofork->of_ad) < 0) {
368 adflags = ADFLAGS_DF;
371 /* here's the deal. we only try to create the resource
372 * fork if the user wants to open it for write acess. */
373 if (ad_open(upath, adflags, O_RDWR | O_CREAT, 0666, ofork->of_ad) < 0)
375 ofork->of_flags |= AFPFORK_OPEN;
384 ret = AFPERR_BADTYPE;
388 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
395 /* the ressource fork is open too */
396 ofork->of_flags |= AFPFORK_OPEN;
399 /* try opening in read-only mode */
401 if (ad_open(upath, adflags, O_RDONLY, 0, ofork->of_ad) < 0) {
409 /* see if client asked for a read only data fork */
410 if (fork == OPENFORK_DATA) {
411 if (ad_open(upath, ADFLAGS_DF, O_RDONLY, 0, ofork->of_ad) < 0) {
414 adflags = ADFLAGS_DF;
416 /* else we don't set AFPFORK_OPEN because there's no ressource fork file
417 * We need to check AFPFORK_OPEN in afp_closefork(). eg fork open read-only
418 * then create in open read-write.
419 * FIXME , it doesn't play well with byte locking example:
420 * ressource fork open read only
421 * locking set on it (no effect, there's no file!)
422 * ressource fork open read write now
431 ret = AFPERR_BADTYPE;
435 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_open: %s", s_path->m_name, strerror(errno) );
441 /* the ressource fork is open too */
442 ofork->of_flags |= AFPFORK_OPEN;
446 if ((adflags & ADFLAGS_HF) && (ad_get_HF_flags( ofork->of_ad) & O_CREAT)) {
447 if (ad_setname(ofork->of_ad, path)) {
448 ad_flush( ofork->of_ad );
452 if (( ret = getforkparams(ofork, bitmap, rbuf + 2 * sizeof( u_int16_t ),
453 &buflen )) != AFP_OK ) {
454 ad_close( ofork->of_ad, adflags );
458 *rbuflen = buflen + 2 * sizeof( u_int16_t );
459 bitmap = htons( bitmap );
460 memcpy(rbuf, &bitmap, sizeof( u_int16_t ));
461 rbuf += sizeof( u_int16_t );
463 /* check WriteInhibit bit if we have a ressource fork
464 * the test is done here, after some Mac trafic capture
466 if (ad_meta_fileno(ofork->of_ad) != -1) { /* META */
467 ad_getattr(ofork->of_ad, &bshort);
468 if ((bshort & htons(ATTRBIT_NOWRITE)) && (access & OPENACC_WR)) {
469 ad_close( ofork->of_ad, adflags );
472 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
473 return(AFPERR_OLOCK);
478 * synchronization locks:
481 /* don't try to lock non-existent rforks. */
482 if ((eid == ADEID_DFORK) || (ad_meta_fileno(ofork->of_ad) != -1)) { /* META */
484 ret = fork_setmode(ofork->of_ad, eid, access, ofrefnum);
485 /* can we access the fork? */
488 ad_close( ofork->of_ad, adflags );
491 case EAGAIN: /* return data anyway */
495 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
496 return( AFPERR_DENYCONF );
500 LOG(log_error, logtype_afpd, "afp_openfork(%s): ad_lock: %s", s_path->m_name, strerror(ret) );
501 return( AFPERR_PARAM );
504 if ((access & OPENACC_WR))
505 ofork->of_flags |= AFPFORK_ACCWR;
507 /* the file may be open read only without ressource fork */
508 if ((access & OPENACC_RD))
509 ofork->of_flags |= AFPFORK_ACCRD;
511 memcpy(rbuf, &ofrefnum, sizeof(ofrefnum));
517 return (access & OPENACC_WR) ? AFPERR_LOCK : AFPERR_ACCESS;
521 int afp_setforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen, char *rbuf _U_, size_t *rbuflen)
525 u_int16_t ofrefnum, bitmap;
533 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
534 ibuf += sizeof( ofrefnum );
536 memcpy(&bitmap, ibuf, sizeof(bitmap));
537 bitmap = ntohs(bitmap);
538 ibuf += sizeof( bitmap );
541 if (NULL == ( ofork = of_find( ofrefnum )) ) {
542 LOG(log_error, logtype_afpd, "afp_setforkparams: of_find(%d) could not locate fork", ofrefnum );
543 return( AFPERR_PARAM );
546 if (ofork->of_vol->v_flags & AFPVOL_RO)
549 if ((ofork->of_flags & AFPFORK_ACCWR) == 0)
550 return AFPERR_ACCESS;
552 if ( ofork->of_flags & AFPFORK_DATA) {
554 } else if (ofork->of_flags & AFPFORK_RSRC) {
559 if ( ( (bitmap & ( (1<<FILPBIT_DFLEN) | (1<<FILPBIT_EXTDFLEN) ))
560 && eid == ADEID_RFORK
562 ( (bitmap & ( (1<<FILPBIT_RFLEN) | (1<<FILPBIT_EXTRFLEN) ))
563 && eid == ADEID_DFORK)) {
564 return AFPERR_BITMAP;
568 if ((bitmap & ( (1<<FILPBIT_EXTDFLEN) | (1<<FILPBIT_EXTRFLEN) ))) {
569 if (afp_version >= 30) {
573 return AFPERR_BITMAP;
576 if (ibuflen < 2+ sizeof(ofrefnum) + sizeof(bitmap) + is64 +4)
577 return AFPERR_PARAM ;
579 size = get_off_t(&ibuf, is64);
582 return AFPERR_PARAM; /* Some MacOS don't return an error they just don't change the size! */
585 if (bitmap == (1<<FILPBIT_DFLEN) || bitmap == (1<<FILPBIT_EXTDFLEN)) {
586 st_size = ad_size(ofork->of_ad, eid);
588 if (st_size > size &&
589 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0)
590 goto afp_setfork_err;
592 err = ad_dtruncate( ofork->of_ad, size );
594 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
596 goto afp_setfork_err;
597 } else if (bitmap == (1<<FILPBIT_RFLEN) || bitmap == (1<<FILPBIT_EXTRFLEN)) {
598 ad_refresh( ofork->of_ad );
600 st_size = ad_size(ofork->of_ad, eid);
602 if (st_size > size &&
603 ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, size, st_size -size, ofork->of_refnum) < 0) {
604 goto afp_setfork_err;
606 err = ad_rtruncate(ofork->of_ad, size);
608 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, size, st_size -size, ofork->of_refnum);
610 goto afp_setfork_err;
612 if (ad_flush( ofork->of_ad ) < 0) {
613 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): ad_flush: %s", of_name(ofork), strerror(errno) );
617 return AFPERR_BITMAP;
620 if ( flushfork( ofork ) < 0 ) {
621 LOG(log_error, logtype_afpd, "afp_setforkparams(%s): flushfork: %s", of_name(ofork), strerror(errno) );
636 return AFPERR_ACCESS;
647 /* for this to work correctly, we need to check for locks before each
648 * read and write. that's most easily handled by always doing an
649 * appropriate check before each ad_read/ad_write. other things
650 * that can change files like truncate are handled internally to those
653 #define ENDBIT(a) ((a) & 0x80)
654 #define UNLOCKBIT(a) ((a) & 0x01)
657 /* ---------------------- */
658 static int byte_lock(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
661 off_t offset, length;
669 /* figure out parameters */
671 flags = *ibuf; /* first bit = endflag, lastbit = lockflag */
673 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
674 ibuf += sizeof(ofrefnum);
676 if (NULL == ( ofork = of_find( ofrefnum )) ) {
677 LOG(log_error, logtype_afpd, "afp_bytelock: of_find(%d) could not locate fork", ofrefnum );
678 return( AFPERR_PARAM );
681 if ( ofork->of_flags & AFPFORK_DATA) {
683 } else if (ofork->of_flags & AFPFORK_RSRC) {
688 offset = get_off_t(&ibuf, is64);
689 length = get_off_t(&ibuf, is64);
691 /* FIXME AD_FILELOCK test is surely wrong */
693 length = BYTELOCK_MAX;
694 else if (!length || is_neg(is64, length)) {
696 } else if ((length >= AD_FILELOCK_BASE) && -1 == (ad_reso_fileno(ofork->of_ad))) { /* HF ?*/
701 offset += ad_size(ofork->of_ad, eid);
702 /* FIXME what do we do if file size > 2 GB and
703 it's not byte_lock_ext?
706 if (offset < 0) /* error if we have a negative offset */
709 /* if the file is a read-only file, we use read locks instead of
710 * write locks. that way, we can prevent anyone from initiating
712 lockop = UNLOCKBIT(flags) ? ADLOCK_CLR : ADLOCK_WR;
713 if (ad_lock(ofork->of_ad, eid, lockop, offset, length,
714 ofork->of_refnum) < 0) {
718 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_LOCK;
724 return UNLOCKBIT(flags) ? AFPERR_NORANGE : AFPERR_RANGEOVR;
732 *rbuflen = set_off_t (offset, rbuf, is64);
736 /* --------------------------- */
737 int afp_bytelock(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
739 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 0);
742 /* --------------------------- */
743 int afp_bytelock_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
745 return byte_lock ( obj, ibuf, ibuflen, rbuf, rbuflen , 1);
750 /* --------------------------- */
751 static int crlf(struct ofork *of)
755 if ( ad_meta_fileno( of->of_ad ) == -1 || !memcmp( ufinderi, ad_entry( of->of_ad, ADEID_FINDERI),8)) { /* META */
756 /* no resource fork or no finderinfo, use our files extension mapping */
757 if (!( em = getextmap( of_name(of) )) || memcmp( "TEXT", em->em_type, sizeof( em->em_type ))) {
760 /* file type is TEXT */
763 } else if ( !memcmp( "TEXT", ad_entry( of->of_ad, ADEID_FINDERI ), 4 )) {
770 static ssize_t read_file(struct ofork *ofork, int eid,
771 off_t offset, u_char nlmask,
772 u_char nlchar, char *rbuf,
773 size_t *rbuflen, const int xlate)
779 cc = ad_read(ofork->of_ad, eid, offset, rbuf, *rbuflen);
781 LOG(log_error, logtype_afpd, "afp_read(%s): ad_read: %s", of_name(ofork), strerror(errno) );
783 return( AFPERR_PARAM );
785 if ( (size_t)cc < *rbuflen ) {
793 for ( p = rbuf, q = p + cc; p < q; ) {
794 if (( *p++ & nlmask ) == nlchar ) {
805 * If this file is of type TEXT, then swap \012 to \015.
808 for ( p = rbuf, q = p + cc; p < q; p++ ) {
809 if ( *p == '\012' ) {
811 } else if ( *p == '\015' ) {
820 return( AFPERR_EOF );
825 /* -----------------------------
826 * with ddp, afp_read can return fewer bytes than in reqcount
827 * so return EOF only if read actually past end of file not
828 * if offset +reqcount > size of file
830 * getfork size ==> 10430
831 * read fork offset 0 size 10752 ???? ==> 4264 bytes (without EOF)
832 * read fork offset 4264 size 6128 ==> 4264 (without EOF)
833 * read fork offset 9248 size 1508 ==> 1182 (EOF)
834 * 10752 is a bug in Mac 7.5.x finder
836 * with dsi, should we check that reqcount < server quantum?
838 static int read_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
841 off_t offset, saveoff, reqcount, savereqcount;
845 u_char nlmask, nlchar;
848 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
849 ibuf += sizeof( u_short );
851 if (NULL == ( ofork = of_find( ofrefnum )) ) {
852 LOG(log_error, logtype_afpd, "afp_read: of_find(%d) could not locate fork", ofrefnum );
857 if ((ofork->of_flags & AFPFORK_ACCRD) == 0) {
861 offset = get_off_t(&ibuf, is64);
862 reqcount = get_off_t(&ibuf, is64);
871 /* if we wanted to be picky, we could add in the following
872 * bit: if (afp_version == 11 && !(nlmask == 0xFF || !nlmask))
874 if (reqcount < 0 || offset < 0) {
879 if ( ofork->of_flags & AFPFORK_DATA) {
881 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
882 } else if (ofork->of_flags & AFPFORK_RSRC) {
884 } else { /* fork wasn't opened. this should never really happen. */
889 /* zero request count */
895 savereqcount = reqcount;
897 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_RD, saveoff, savereqcount,ofork->of_refnum) < 0) {
902 #define min(a,b) ((a)<(b)?(a):(b))
903 *rbuflen = min( reqcount, *rbuflen );
904 err = read_file(ofork, eid, offset, nlmask, nlchar, rbuf, rbuflen, xlate);
908 /* dsi can stream requests. we can only do this if we're not checking
909 * for an end-of-line character. oh well. */
910 if ((obj->proto == AFPPROTO_DSI) && (*rbuflen < reqcount) && !nlmask) {
911 DSI *dsi = obj->handle;
913 int non_blocking = 0;
915 /* reqcount isn't always truthful. we need to deal with that. */
916 size = ad_size(ofork->of_ad, eid);
918 /* subtract off the offset */
920 if (reqcount > size) {
927 /* dsi_readinit() returns size of next read buffer. by this point,
928 * we know that we're sending some data. if we fail, something
929 * horrible happened. */
930 if ((cc = dsi_readinit(dsi, rbuf, *rbuflen, reqcount, err)) < 0)
933 /* due to the nature of afp packets, we have to exit if we get
934 an error. we can't do this with translation on. */
935 #if 0 /* ifdef WITH_SENDFILE */
936 /* FIXME with OS X deadlock partial workaround we can't use sendfile */
937 if (!(xlate || Debug(obj) )) {
938 if (ad_readfile(ofork->of_ad, eid, dsi->socket, offset, dsi->datasize) < 0) {
939 if (errno == EINVAL || errno == ENOSYS)
942 LOG(log_error, logtype_afpd, "afp_read(%s): ad_readfile: %s", of_name(ofork), strerror(errno));
954 /* fill up our buffer. */
956 /* set to non blocking mode */
960 /* fill up our buffer. */
961 while (*rbuflen > 0) {
962 cc = read_file(ofork, eid, offset, nlmask, nlchar, rbuf,rbuflen, xlate);
968 if (obj->options.flags & OPTION_DEBUG) {
969 printf( "(read) reply: %d, %d\n", *rbuflen, dsi->clientID);
970 bprint(rbuf, *rbuflen);
973 /* dsi_read() also returns buffer size of next allocation */
974 cc = dsi_read(dsi, rbuf, *rbuflen); /* send it off */
980 /* set back to blocking mode */
987 LOG(log_error, logtype_afpd, "afp_read(%s): %s", of_name(ofork), strerror(errno));
989 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
990 obj->exit(EXITERR_CLNT);
994 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, savereqcount,ofork->of_refnum);
1002 /* ---------------------- */
1003 int afp_read(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1005 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1008 /* ---------------------- */
1009 int afp_read_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1011 return read_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1014 /* ---------------------- */
1015 int afp_flush(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1023 memcpy(&vid, ibuf, sizeof(vid));
1024 if (NULL == ( vol = getvolbyvid( vid )) ) {
1025 return( AFPERR_PARAM );
1032 int afp_flushfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1034 struct ofork *ofork;
1039 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1041 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1042 LOG(log_error, logtype_afpd, "afp_flushfork: of_find(%d) could not locate fork", ofrefnum );
1043 return( AFPERR_PARAM );
1046 if ( flushfork( ofork ) < 0 ) {
1047 LOG(log_error, logtype_afpd, "afp_flushfork(%s): %s", of_name(ofork), strerror(errno) );
1055 There is a lot to tell about fsync, fdatasync, F_FULLFSYNC.
1056 fsync(2) on OSX is implemented differently than on other platforms.
1057 see: http://mirror.linux.org.au/pub/linux.conf.au/2007/video/talks/278.pdf.
1059 int afp_syncfork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1061 struct ofork *ofork;
1067 memcpy(&ofrefnum, ibuf, sizeof(ofrefnum));
1068 ibuf += sizeof( ofrefnum );
1070 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1071 LOG(log_error, logtype_afpd, "afpd_syncfork: of_find(%d) could not locate fork", ofrefnum );
1072 return( AFPERR_PARAM );
1075 if ( flushfork( ofork ) < 0 ) {
1076 LOG(log_error, logtype_afpd, "flushfork(%s): %s", of_name(ofork), strerror(errno) );
1083 /* this is very similar to closefork */
1084 int flushfork(struct ofork *ofork)
1088 int err = 0, doflush = 0;
1090 if ( ad_data_fileno( ofork->of_ad ) != -1 &&
1091 fsync( ad_data_fileno( ofork->of_ad )) < 0 ) {
1092 LOG(log_error, logtype_afpd, "flushfork(%s): dfile(%d) %s",
1093 of_name(ofork), ad_data_fileno(ofork->of_ad), strerror(errno) );
1097 if ( ad_reso_fileno( ofork->of_ad ) != -1 && /* HF */
1098 (ofork->of_flags & AFPFORK_RSRC)) {
1100 /* read in the rfork length */
1101 ad_refresh(ofork->of_ad);
1103 /* set the date if we're dirty */
1104 if ((ofork->of_flags & AFPFORK_DIRTY) && !gettimeofday(&tv, NULL)) {
1105 ad_setdate(ofork->of_ad, AD_DATE_MODIFY|AD_DATE_UNIX, tv.tv_sec);
1106 ofork->of_flags &= ~AFPFORK_DIRTY;
1110 /* flush the header */
1111 if (doflush && ad_flush(ofork->of_ad) < 0)
1114 if (fsync( ad_reso_fileno( ofork->of_ad )) < 0)
1118 LOG(log_error, logtype_afpd, "flushfork(%s): hfile(%d) %s",
1119 of_name(ofork), ad_reso_fileno(ofork->of_ad), strerror(errno) );
1125 int afp_closefork(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1127 struct ofork *ofork;
1132 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1134 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1135 LOG(log_error, logtype_afpd, "afp_closefork: of_find(%d) could not locate fork", ofrefnum );
1136 return( AFPERR_PARAM );
1138 if ( of_closefork( ofork ) < 0 ) {
1139 LOG(log_error, logtype_afpd, "afp_closefork(%s): of_closefork: %s", of_name(ofork), strerror(errno) );
1140 return( AFPERR_PARAM );
1147 static ssize_t write_file(struct ofork *ofork, int eid,
1148 off_t offset, char *rbuf,
1149 size_t rbuflen, const int xlate)
1155 * If this file is of type TEXT, swap \015 to \012.
1158 for ( p = rbuf, q = p + rbuflen; p < q; p++ ) {
1159 if ( *p == '\015' ) {
1161 } else if ( *p == '\012' ) {
1167 if (( cc = ad_write(ofork->of_ad, eid, offset, 0,
1168 rbuf, rbuflen)) < 0 ) {
1173 return( AFPERR_DFULL );
1175 LOG(log_error, logtype_afpd, "afp_write(%s): ad_write: %s", of_name(ofork), strerror(errno) );
1176 return( AFPERR_PARAM );
1184 /* FPWrite. NOTE: on an error, we always use afp_write_err as
1185 * the client may have sent us a bunch of data that's not reflected
1186 * in reqcount et al. */
1187 static int write_fork(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen, int is64)
1189 struct ofork *ofork;
1190 off_t offset, saveoff, reqcount;
1191 int endflag, eid, xlate = 0, err = AFP_OK;
1195 /* figure out parameters */
1197 endflag = ENDBIT(*ibuf);
1199 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1200 ibuf += sizeof( ofrefnum );
1202 offset = get_off_t(&ibuf, is64);
1203 reqcount = get_off_t(&ibuf, is64);
1205 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1206 LOG(log_error, logtype_afpd, "afp_write: of_find(%d) could not locate fork", ofrefnum );
1211 if ((ofork->of_flags & AFPFORK_ACCWR) == 0) {
1212 err = AFPERR_ACCESS;
1217 writtenfork = ofork;
1220 if ( ofork->of_flags & AFPFORK_DATA) {
1222 xlate = (ofork->of_vol->v_flags & AFPVOL_CRLF) ? crlf(ofork) : 0;
1223 } else if (ofork->of_flags & AFPFORK_RSRC) {
1226 err = AFPERR_ACCESS; /* should never happen */
1231 offset += ad_size(ofork->of_ad, eid);
1233 /* handle bogus parameters */
1234 if (reqcount < 0 || offset < 0) {
1239 /* offset can overflow on 64-bit capable filesystems.
1240 * report disk full if that's going to happen. */
1241 if (sum_neg(is64, offset, reqcount)) {
1246 if (!reqcount) { /* handle request counts of 0 */
1248 *rbuflen = set_off_t (offset, rbuf, is64);
1253 if (ad_tmplock(ofork->of_ad, eid, ADLOCK_WR, saveoff,
1254 reqcount, ofork->of_refnum) < 0) {
1259 /* this is yucky, but dsi can stream i/o and asp can't */
1260 switch (obj->proto) {
1263 if (asp_wrtcont(obj->handle, rbuf, rbuflen) < 0) {
1265 LOG(log_error, logtype_afpd, "afp_write: asp_wrtcont: %s", strerror(errno) );
1266 return( AFPERR_PARAM );
1270 if (obj->options.flags & OPTION_DEBUG) {
1271 printf("(write) len: %d\n", *rbuflen);
1272 bprint(rbuf, *rbuflen);
1275 if ((cc = write_file(ofork, eid, offset, rbuf, *rbuflen,
1278 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1283 #endif /* no afp/asp */
1287 DSI *dsi = obj->handle;
1289 /* find out what we have already and write it out. */
1290 cc = dsi_writeinit(dsi, rbuf, *rbuflen);
1291 if (!cc || (cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1292 dsi_writeflush(dsi);
1294 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1299 #if 0 /*def HAVE_SENDFILE_WRITE*/
1300 if (!(xlate || obj->options.flags & OPTION_DEBUG)) {
1301 if ((cc = ad_writefile(ofork->of_ad, eid, dsi->socket,
1302 offset, dsi->datasize)) < 0) {
1310 LOG(log_error, logtype_afpd, "afp_write: ad_writefile: %s", strerror(errno) );
1311 goto afp_write_loop;
1313 dsi_writeflush(dsi);
1315 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1316 reqcount, ofork->of_refnum);
1321 goto afp_write_done;
1323 #endif /* 0, was HAVE_SENDFILE_WRITE */
1325 /* loop until everything gets written. currently
1326 * dsi_write handles the end case by itself. */
1327 while ((cc = dsi_write(dsi, rbuf, *rbuflen))) {
1328 if ((cc = write_file(ofork, eid, offset, rbuf, cc, xlate)) < 0) {
1329 dsi_writeflush(dsi);
1331 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff,
1332 reqcount, ofork->of_refnum);
1341 ad_tmplock(ofork->of_ad, eid, ADLOCK_CLR, saveoff, reqcount, ofork->of_refnum);
1342 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) /* META */
1343 ofork->of_flags |= AFPFORK_DIRTY;
1345 *rbuflen = set_off_t (offset, rbuf, is64);
1349 if (obj->proto == AFPPROTO_DSI) {
1350 dsi_writeinit(obj->handle, rbuf, *rbuflen);
1351 dsi_writeflush(obj->handle);
1353 if (err != AFP_OK) {
1359 /* ---------------------------- */
1360 int afp_write(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1362 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 0);
1365 /* ----------------------------
1366 * FIXME need to deal with SIGXFSZ signal
1368 int afp_write_ext(AFPObj *obj, char *ibuf, size_t ibuflen, char *rbuf, size_t *rbuflen)
1370 return write_fork(obj, ibuf, ibuflen, rbuf, rbuflen, 1);
1373 /* ---------------------------- */
1374 int afp_getforkparams(AFPObj *obj _U_, char *ibuf, size_t ibuflen _U_, char *rbuf, size_t *rbuflen)
1376 struct ofork *ofork;
1378 u_int16_t ofrefnum, bitmap;
1381 memcpy(&ofrefnum, ibuf, sizeof( ofrefnum ));
1382 ibuf += sizeof( ofrefnum );
1383 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1384 bitmap = ntohs( bitmap );
1385 ibuf += sizeof( bitmap );
1388 if (NULL == ( ofork = of_find( ofrefnum )) ) {
1389 LOG(log_error, logtype_afpd, "afp_getforkparams: of_find(%d) could not locate fork", ofrefnum );
1390 return( AFPERR_PARAM );
1393 if ( ad_meta_fileno( ofork->of_ad ) != -1 ) { /* META */
1394 if ( ad_refresh( ofork->of_ad ) < 0 ) {
1395 LOG(log_error, logtype_afpd, "getforkparams(%s): ad_refresh: %s", of_name(ofork), strerror(errno) );
1396 return( AFPERR_PARAM );
1400 if (AFP_OK != ( ret = getforkparams( ofork, bitmap,
1401 rbuf + sizeof( u_short ), &buflen ))) {
1405 *rbuflen = buflen + sizeof( u_short );
1406 bitmap = htons( bitmap );
1407 memcpy(rbuf, &bitmap, sizeof( bitmap ));